* Fuel Filter: This is the most likely filter you're thinking of. It's designed to remove contaminants from the gasoline before it reaches the engine's fuel injectors or carburetor. Its location varies by engine type (3.3L, 3.9L, 5.2L, 5.9L are common in that era Dodge van). You'll need to consult your owner's manual or a repair manual specific to your van's engine to find its location. You cannot clean a fuel filter; you must replace it.
* Air Filter: This filter cleans the air going into the engine. It's usually located in an easily accessible airbox, often near the engine. This *can* be cleaned (depending on the type – some are paper, some are washable) but replacement is generally recommended for best performance.
* Evaporative Emission (EVAP) System Canister: This component isn't a filter in the traditional sense, but it does contain charcoal to trap fuel vapors. It generally doesn't require cleaning; replacement is usually necessary if it fails.
To find the fuel filter and replace it (you can't clean it):
1. Consult your owner's manual: This is the best place to start. It will tell you the location of the fuel filter and provide instructions (though often quite basic).
2. Use a repair manual: A Haynes or Chilton repair manual for your specific year and engine will have detailed diagrams and instructions, including torque specifications for tightening. This is crucial to avoid leaks.
3. Locate the fuel filter: Once you know where it is, you'll need to relieve fuel pressure in the system before disconnecting anything. Failure to do so can result in fuel spraying everywhere. Consult your repair manual for the proper procedure. This usually involves disconnecting the fuel pump relay.
4. Replace the filter: Carefully remove the old filter and install the new one, ensuring the arrows on the filter indicate the correct fuel flow direction.
5. Reconnect everything: Tighten all connections properly and reconnect the fuel pump relay.
6. Check for leaks: After starting the engine, carefully inspect the filter and connections for any fuel leaks.
In short: Don't try to clean the fuel filter. Replace it. For the air filter, consult your owner's manual to see if it's washable or needs replacing. If you're unsure about any of these steps, it's best to take your van to a qualified mechanic. Working with fuel systems can be dangerous if not done correctly.
